While researching SMS Baden, I found in the book "The Kaiser's Battlefleet" by Aidan Dodson a reference to designs that were put forward for a Bayern class armed with eight 40cm (16in) guns.
I've always wanted to draw a Baden armed with such guns, now I have. There is no change in the layout of Baden except that he is armed with 40cm guns and is appropriately larger to accommodate such an armament. A class of ships such armed would have significantly upped the ante for the Royal Navy.
I've added the real life drawing of Baden for comparison.
Baden Design Armed With 40cm (16in) Guns
Baden As Built (1918)
Sachsen, Bayern class battleship
Württemberg, Bayern class battleship
SMS Goeben, Moltke class battlecruiser
SMS Blucher armoured cruiser
MD Scale, 4 Pixels : 1 Foot
Official German Parts Sheet
German Capital Ship Projects of The First World War